SELECT 
  AGE_GRP.AGE_CODE AS "年齢コード",
  AGE_GRP.AGE_NAME AS "年齢階層名",
  sum(SP_TIME_5) AS "5時間未満", 
  sum(SP_TIME_6) AS "5時間以上6時間未満", 
  sum(SP_TIME_7) AS "6時間以上7時間未満", 
  sum(SP_TIME_8) AS "7時間以上8時間未満", 
  sum(SP_TIME_9) AS "8時間以上9時間未満", 
  sum(SP_TIME_6) AS "9時間以上"
FROM SLEEP_TIME_DTL 
INNER JOIN AGE_GRP ON SLEEP_TIME_DTL.AGE_CODE = AGE_GRP.AGE_CODE
INNER JOIN PREFECTURE ON SLEEP_TIME_DTL.PF_CODE = PREFECTURE.PF_CODE
WHERE PREFECTURE.PF_NAME IN ("北海道", "青森県", "岩手県", "宮城県", "福島県")
GROUP BY AGE_GRP.AGE_CODE
ORDER BY AGE_GRP.AGE_CODE;